Several theories have been developed to explain the mysteriously recurring presence of this man in the dreams of different people who are not related in any way. The following theories are the ones that elicit the greatest interest among the dreamers themselves.

ARCHETYPE THEORY
According to Jung's psychoanalytic theory, this man is an archetypal image belonging to the collective unconscious that can surface in times of hardship (emotional development, dramatic changes in our lives, stressful circumstances etc.) in particularly sensitive subjects.

DREAM SURFER THEORY
It is the most interesting theory and the one that has the greatest implications, but it has also the lowest scientific credibility. According to this theory this man is a real person, who can enter people's dreams by means of specific psychological skills. Some believe that in real life this man looks like the man in the dreams. Others think that the man in the dreams looks completely different from his real life counterpart. Some people seem to believe that behind this man there is a mental conditioning plan developed by a major corporation.

DREAM IMITATION THEORY
This is a scientific psycho-sociological theory which claims that this phenomenon has arisen casually and has progressively developed by imitation. Basically when people are exposed to this phenomenon they become so deeply impressed that they start seeing this man in their dreams.

DAYTIME RECOGNITION THEORY
This theory states that the apparitions of this man are purely casual. Normally we do not remember precisely the faces we see in our dreams. The image of this man would thus be an instrument which, in the subject's waking life, facilitates recognition of an undefined oneirical image.